* Re: Netlink send from the interrupt context [not found] ` <7e63f56c0511230032x5097569dr3ddac4b05bb6019c@mail.gmail.com> @ 2005-11-23 8:33 ` Robert Iakobashvili 2005-11-23 9:04 ` Yu Zhiguo 0 siblings, 1 reply; 3+ messages in thread From: Robert Iakobashvili @ 2005-11-23 8:33 UTC (permalink / raw) To: Yu Zhiguo; +Cc: netdev, netfilter-devel On 11/23/05, Robert Iakobashvili <coroberti@gmail.com> wrote: > On 11/23/05, Yu Zhiguo <yuzg@nanjing-fnst.com> wrote: > > Please refer to the function netlink_broadcast(), > > int netlink_broadcast(struct sock *ssk, struct sk_buff *skb, u32 pid, u32 group, int allocation) > > I think if allocation=GFP_ATOMIC, it can be used in interrupt context. > > What's your opinion? Allocation is OK and it uses only spinlocks in all functions called, no semaphores. My concern actually rises from here: http://www.ussg.iu.edu/hypermail/linux/kernel/0407.3/0455.html Sincerely, ---------------------------------------------------------------- Robert Iakobashvili - NAVIGARE NECESSE EST coroberti at gmail dot com --------------------------------------------------------------- ^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: Netlink send from the interrupt context 2005-11-23 8:33 ` Netlink send from the interrupt context Robert Iakobashvili @ 2005-11-23 9:04 ` Yu Zhiguo 0 siblings, 0 replies; 3+ messages in thread From: Yu Zhiguo @ 2005-11-23 9:04 UTC (permalink / raw) To: Robert Iakobashvili; +Cc: netdev, netfilter-devel yes, it use spinlocks rather than semaphore, and it can use GFP_ATOMIC to clone the message, so I think it will not go sleep. regards, ----- Original Message ----- > On 11/23/05, Robert Iakobashvili <coroberti@gmail.com> wrote: >> On 11/23/05, Yu Zhiguo <yuzg@nanjing-fnst.com> wrote: >> > Please refer to the function netlink_broadcast(), >> > int netlink_broadcast(struct sock *ssk, struct sk_buff *skb, u32 pid, u32 group, int allocation) >> > I think if allocation=GFP_ATOMIC, it can be used in interrupt context. >> > What's your opinion? > > Allocation is OK and it uses only spinlocks in all functions called, > no semaphores. > > My concern actually rises from here: > http://www.ussg.iu.edu/hypermail/linux/kernel/0407.3/0455.html > > Sincerely, > ---------------------------------------------------------------- > Robert Iakobashvili - NAVIGARE NECESSE EST > coroberti at gmail dot com > --------------------------------------------------------------- ^ permalink raw reply [flat|nested] 3+ messages in thread
* Netlink send from the interrupt context @ 2005-11-21 11:16 Robert Iakobashvili 0 siblings, 0 replies; 3+ messages in thread From: Robert Iakobashvili @ 2005-11-21 11:16 UTC (permalink / raw) To: netdev Are there netlink socket netlink_unicast () and netlink_broadcast () interrupt safe? If not, where is the problem and the direction to make them safe? If it is not easy, what could be a workaroud? Thank you in advance. ---------------------------------------------------------------- Robert Iakobashvili - NAVIGARE NECESSE EST coroberti at gmail dot com --------------------------------------------------------------- ^ permalink raw reply [flat|nested] 3+ messages in thread
end of thread, other threads:[~2005-11-23 9:04 UTC | newest]
Thread overview: 3+ messages (download: mbox.gz follow: Atom feed
-- links below jump to the message on this page --
[not found] <7e63f56c0511210034h49917721k74ddb251b9bb1815@mail.gmail.com>
[not found] ` <00a901c5ee79$389e5040$6704a8c0@skqianyi>
[not found] ` <7e63f56c0511222328w6368f7bcl7877fe3aa62c2807@mail.gmail.com>
[not found] ` <02e501c5f002$e5094d00$6704a8c0@skqianyi>
[not found] ` <7e63f56c0511230004j79c7f080j56e25251387ebe94@mail.gmail.com>
[not found] ` <031201c5f007$0ce2e1c0$6704a8c0@skqianyi>
[not found] ` <7e63f56c0511230032x5097569dr3ddac4b05bb6019c@mail.gmail.com>
2005-11-23 8:33 ` Netlink send from the interrupt context Robert Iakobashvili
2005-11-23 9:04 ` Yu Zhiguo
2005-11-21 11:16 Robert Iakobashvili
This is a public inbox, see mirroring instructions for how to clone and mirror all data and code used for this inbox